Carbide Tool Crater Resistant Layer

The crater resistant layer disposed on the rake face or faces of carbide tools can be formed in various ways.

One method is compacting a mixture of powders having the desired composition of the green core and then placing a layer of a second mixture of powder having the desired proportions for the green crater-resistant layer on top of the green core and compacting both mixtures followed by sintering the resulting green compacted laminate using standard techniques to form a finished cemented carbide material.

 As an alternative, previously formed, green unsintered layers of carbide materials having the desired proportions for the various layers could be laminated and compacted together followed by sintering as above to form a laminated cemented metal carbide composite substrate.


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